Abstract:
In this study, seven main traits and grain yield of 10 millet varieties were selected for path analysis and cluster analysis. The results showed that 10 varieties of millet could be gathered into 3 categories, the first category including 7 materials, namely Jinshu 8, Jinshu 9, Jinshu 5, Jinshu 7, Yanshu 7, Jinshu 6 and Jinshu 3, and the biological yield, plant height, crude protein and crude fat content were low, while the second category was only Qishu 1, which had higher grain yield, crude protein and crude fat content. And, the third category including Yushu 1 and Jinshu 1, had higher grain yield, biological yield, crude protein content and crude fat content. There were obvious differences in growth characteristics, grain quality, biological output and grain yield of the 10 varieties of millet. The varieties of Yushu 1 and Jinshu 1 were superior to other varieties with plant heights of 84.31 cm and 81.48 cm respectively, while the grain yields were 6 646.39 kg/hm~2 and 6 363.28 kg/hm~2 respectively. In addition, the biological yield was 15 026.09 kg/hm~2 and 14 962.05 kg/hm~2 and the crude protein content was 17.8% and 15.13%, while the crude lipid content was 4.33% and 4.63% in Yushu 1 and Jinshu 1, respectively. The direct effects of seven traits on yield were panicle weight, SPAD value, root-shoot ratio, panicle length, 1 000-grain weight, plant height and biological yield, while biological yield and plant height showed negative effects. The two cultivars Yushu 1 and Jinshu 1 were considered to be suitable for film-mulched micro-furrow hill-point planting in upland hilly areas along the Great Wall.